Question: What is the detection method of that which is orbited by Tau Ceti?
Paraphrase: What is the location strategy of that which is circled by Tau Ceti?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q15820 wdt:P398 ?X . ?X wdt:P1046 ?answer}
Answer: doppler spectroscopy, doppler spectroscopy, doppler spectroscopy, doppler spectroscopy, doppler spectroscopy, radial velocity